Richards Organics Naturally Gentle & Safe Flea & Tick Spray is formulated to kill and repel fleas & ticks for up to 4 weeks without exposing your pet and family to harsh chemicals. Use with Richards Organics Naturally Gentle & Safe Flea & Tick Shampoo and Whole House Premise Treatment for complete Flea Free system. For dogs over 12 weeks. Kills fleas & ticks for up to 4 weeks. Safe for use around children and pets. Repels mosquitoes. No artificial color or fragrance. Not Safe For Cats.